mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2024-12-27 10:34:08 +08:00
307 lines
8 KiB
C
307 lines
8 KiB
C
//-----------------------------------------------------------------------------
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// Copyright (C) Jonathan Westhues, Sept 2005
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// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// See LICENSE.txt for the text of the license.
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//-----------------------------------------------------------------------------
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// Utility functions used in many places, not specific to any piece of code.
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//-----------------------------------------------------------------------------
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#include "util.h"
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#include "proxmark3_arm.h"
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#include "ticks.h"
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#include "commonutil.h"
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#include "dbprint.h"
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#include "string.h"
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#include "usb_cdc.h"
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#include "usart.h"
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size_t nbytes(size_t nbits) {
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return (nbits >> 3) + ((nbits % 8) > 0);
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}
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//convert hex digit to integer
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uint8_t hex2int(char hexchar) {
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switch (hexchar) {
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case '0':
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return 0;
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break;
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case '1':
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return 1;
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break;
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case '2':
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return 2;
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break;
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case '3':
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return 3;
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break;
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case '4':
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return 4;
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break;
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case '5':
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return 5;
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break;
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case '6':
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return 6;
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break;
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case '7':
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return 7;
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break;
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case '8':
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return 8;
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break;
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case '9':
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return 9;
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break;
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case 'a':
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case 'A':
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return 10;
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break;
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case 'b':
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case 'B':
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return 11;
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break;
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case 'c':
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case 'C':
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return 12;
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break;
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case 'd':
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case 'D':
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return 13;
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break;
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case 'e':
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case 'E':
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return 14;
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break;
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case 'f':
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case 'F':
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return 15;
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break;
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default:
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return 0;
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}
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}
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void LEDsoff(void) {
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LED_A_OFF();
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LED_B_OFF();
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LED_C_OFF();
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LED_D_OFF();
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}
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//ICEMAN: LED went from 1,2,3,4 -> 1,2,4,8
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void LED(int led, int ms) {
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if (led & LED_A) // Proxmark3 historical mapping: LED_ORANGE
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LED_A_ON();
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if (led & LED_B) // Proxmark3 historical mapping: LED_GREEN
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LED_B_ON();
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if (led & LED_C) // Proxmark3 historical mapping: LED_RED
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LED_C_ON();
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if (led & LED_D) // Proxmark3 historical mapping: LED_RED2
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LED_D_ON();
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if (!ms)
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return;
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SpinDelay(ms);
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if (led & LED_A)
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LED_A_OFF();
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if (led & LED_B)
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LED_B_OFF();
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if (led & LED_C)
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LED_C_OFF();
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if (led & LED_D)
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LED_D_OFF();
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}
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void SpinOff(uint32_t pause) {
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LED_A_OFF();
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LED_B_OFF();
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LED_C_OFF();
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LED_D_OFF();
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SpinDelay(pause);
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}
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// Blinks..
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// A = 1, B = 2, C = 4, D = 8
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void SpinErr(uint8_t led, uint32_t speed, uint8_t times) {
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SpinOff(speed);
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NTIME(times) {
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if (led & LED_A) // Proxmark3 historical mapping: LED_ORANGE
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LED_A_INV();
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if (led & LED_B) // Proxmark3 historical mapping: LED_GREEN
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LED_B_INV();
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if (led & LED_C) // Proxmark3 historical mapping: LED_RED
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LED_C_INV();
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if (led & LED_D) // Proxmark3 historical mapping: LED_RED2
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LED_D_INV();
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SpinDelay(speed);
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}
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LED_A_OFF();
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LED_B_OFF();
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LED_C_OFF();
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LED_D_OFF();
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}
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void SpinDown(uint32_t speed) {
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SpinOff(speed);
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LED_D_ON();
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SpinDelay(speed);
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LED_D_OFF();
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LED_C_ON();
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SpinDelay(speed);
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LED_C_OFF();
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LED_B_ON();
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SpinDelay(speed);
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LED_B_OFF();
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LED_A_ON();
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SpinDelay(speed);
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LED_A_OFF();
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}
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void SpinUp(uint32_t speed) {
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SpinOff(speed);
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LED_A_ON();
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SpinDelay(speed);
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LED_A_OFF();
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LED_B_ON();
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SpinDelay(speed);
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LED_B_OFF();
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LED_C_ON();
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SpinDelay(speed);
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LED_C_OFF();
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LED_D_ON();
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SpinDelay(speed);
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LED_D_OFF();
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}
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// Determine if a button is double clicked, single clicked,
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// not clicked, or held down (for ms || 1sec)
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// In general, don't use this function unless you expect a
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// double click, otherwise it will waste 500ms -- use BUTTON_HELD instead
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int BUTTON_CLICKED(int ms) {
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// Up to 500ms in between clicks to mean a double click
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// timer counts in 21.3us increments (1024/48MHz)
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// WARNING: timer can't measure more than 1.39s (21.3us * 0xffff)
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if (ms > 1390) {
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if (g_dbglevel >= DBG_ERROR) Dbprintf(_RED_("Error, BUTTON_CLICKED called with %i > 1390"), ms);
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ms = 1390;
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}
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int ticks = ((MCK / 1000) * (ms ? ms : 1000)) >> 10;
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// If we're not even pressed, forget about it!
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if (BUTTON_PRESS() == false)
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return BUTTON_NO_CLICK;
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// Borrow a PWM unit for my real-time clock
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AT91C_BASE_PWMC->PWMC_ENA = PWM_CHANNEL(0);
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// 48 MHz / 1024 gives 46.875 kHz
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AT91C_BASE_PWMC_CH0->PWMC_CMR = PWM_CH_MODE_PRESCALER(10);
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AT91C_BASE_PWMC_CH0->PWMC_CDTYR = 0;
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AT91C_BASE_PWMC_CH0->PWMC_CPRDR = 0xffff;
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uint16_t start = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
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int letoff = 0;
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for (;;) {
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uint16_t now = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
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// We haven't let off the button yet
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if (!letoff) {
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// We just let it off!
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if (BUTTON_PRESS() == false) {
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letoff = 1;
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// reset our timer for 500ms
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start = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
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ticks = ((MCK / 1000) * (500)) >> 10;
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}
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// Still haven't let it off
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else
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// Have we held down a full second?
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if (now == (uint16_t)(start + ticks))
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return BUTTON_HOLD;
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}
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// We already let off, did we click again?
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else
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// Sweet, double click!
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if (BUTTON_PRESS())
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return BUTTON_DOUBLE_CLICK;
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// Have we ran out of time to double click?
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else if (now == (uint16_t)(start + ticks))
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// At least we did a single click
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return BUTTON_SINGLE_CLICK;
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WDT_HIT();
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}
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// We should never get here
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return BUTTON_ERROR;
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}
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// Determine if a button is held down
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int BUTTON_HELD(int ms) {
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// timer counts in 21.3us increments (1024/48MHz)
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// WARNING: timer can't measure more than 1.39s (21.3us * 0xffff)
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if (ms > 1390) {
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if (g_dbglevel >= DBG_ERROR) Dbprintf(_RED_("Error, BUTTON_HELD called with %i > 1390"), ms);
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ms = 1390;
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}
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// If button is held for one second
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int ticks = (48000 * (ms ? ms : 1000)) >> 10;
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// If we're not even pressed, forget about it!
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if (BUTTON_PRESS() == false)
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return BUTTON_NO_CLICK;
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// Borrow a PWM unit for my real-time clock
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AT91C_BASE_PWMC->PWMC_ENA = PWM_CHANNEL(0);
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// 48 MHz / 1024 gives 46.875 kHz
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AT91C_BASE_PWMC_CH0->PWMC_CMR = PWM_CH_MODE_PRESCALER(10);
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AT91C_BASE_PWMC_CH0->PWMC_CDTYR = 0;
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AT91C_BASE_PWMC_CH0->PWMC_CPRDR = 0xffff;
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uint16_t start = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
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for (;;) {
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uint16_t now = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
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// As soon as our button let go, we didn't hold long enough
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if (BUTTON_PRESS() == false)
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return BUTTON_SINGLE_CLICK;
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// Have we waited the full second?
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else if (now == (uint16_t)(start + ticks))
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return BUTTON_HOLD;
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WDT_HIT();
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}
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// We should never get here
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return BUTTON_ERROR;
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}
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bool data_available(void) {
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#ifdef WITH_FPC_USART_HOST
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return usb_poll_validate_length() || (usart_rxdata_available() > 0);
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#else
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return usb_poll_validate_length();
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#endif
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}
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